<style lang="scss">
  .ar {
    width: 420px;
    font-family: 'Roboto', sans-serif;
    border-radius: 16px;
    background-color: #FAFAFA;
    box-shadow: 0 4px 18px 0 rgba(0,0,0,0.17);
    position: relative;
    box-sizing: content-box;

    &-content {
      padding: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    &-records {
      height: 138px;
      padding-top: 1px;
      overflow-y: auto;
      margin-bottom: 20px;

      &__record {
        width: 320px;
        height: 45px;
        padding: 0 10px;
        margin: 0 auto;
        line-height: 45px;
        display: flex;
        justify-content: space-between;
        border-bottom: 1px solid #E8E8E8;
        position: relative;

        &--selected {
          border: 1px solid #E8E8E8;
          border-radius: 24px;
          background-color: #FFFFFF;
          margin-top: -1px;
          padding: 0 34px;
        }
      }
    }

    &-recorder {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;

      &__duration {
        color: #AEAEAE;
        font-size: 32px;
        font-weight: 500;
        margin-top: 20px;
        margin-bottom: 16px;
      }

      &__stop {
        position: absolute;
        top: 10px;
        right: -52px;
      }

      &__time-limit {
        position: absolute;
        color: #AEAEAE;
        font-size: 12px;
        top: 128px;
      }

      &__records-limit {
        position: absolute;
        color: #AEAEAE;
        font-size: 13px;
        top: 78px;
      }
    }

    &-spinner {
      display: flex;
      height: 30px;
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      margin: auto;
      width: 144px;
      z-index: 10;

      &__dot {
        display: block;
        margin: 0 8px;
        border-radius: 50%;
        width: 30px;
        height: 30px;
        background: #05CBCD;
        animation-name: blink;
        animation-duration: 1.4s;
        animation-iteration-count: infinite;
        animation-fill-mode: both;

        &:nth-child(2) { animation-delay: .2s; }

        &:nth-child(3) { animation-delay: .4s; }

        @keyframes blink {
          0%    { opacity: .2; }
          20%   { opacity: 1;  }
          100%  { opacity: .2; }
        }
      }
    }

    &__text {
      color: rgba(84,84,84,0.5);
      font-size: 16px;
    }

    &__blur {
      filter: blur(2px);
      opacity: 0.7;
    }

    &__overlay {
      position: absolute;
      width: 100%;
      height: 100%;
      z-index: 10;
    }

    &__upload-status {
      text-align: center;
      font-size: 10px;
      padding: 2px;
      letter-spacing: 1px;
      position: absolute;
      bottom: 0;

      &--success {
        color: green;
      }

      &--fail {
        color: red;
      }
    }

    &__rm {
      cursor: pointer;
      position: absolute;
      width: 6px;
      height: 6px;
      padding: 6px;
      line-height: 6px;
      margin: auto;
      left: 10px;
      bottom: 0;
      top: 0;
      color: rgb(244, 120, 90);
    }

    &__downloader,
    &__uploader {
      position: absolute;
      top: 0;
      bottom: 0;
      margin: auto;
    }

    &__downloader {
      right: 115px;
    }

    &__uploader {
      right: 85px;
    }
  }

  @import '../scss/icons';
</style>

<template>
  <div class="ar">
    <div class="ar__overlay" v-if="isUploading"></div>
    <div class="ar-spinner" v-if="isUploading">
      <div class="ar-spinner__dot"></div>
      <div class="ar-spinner__dot"></div>
      <div class="ar-spinner__dot"></div>
    </div>

    <div class="ar-content" :class="{'ar__blur': isUploading}">
      <input @change="playfile" ref="inputer" id="file" type="file" />
      <div class="ar-recorder">
        <icon-button
          class="ar-icon ar-icon__lg"
          :name="iconButtonType"
          :class="{
            'ar-icon--rec': isRecording,
            'ar-icon--pulse': isRecording && volume > 0.02
          }"
          @click.native="toggleRecorder"/>
        <icon-button
          class="ar-icon ar-icon__sm ar-recorder__stop"
          name="stop"
          @click.native="stopRecorder"/>
      </div>

      <div class="ar-recorder__records-limit" v-if="attempts">Attempts: {{attemptsLeft}}/{{attempts}}</div>
      <div class="ar-recorder__duration">{{recordedTime}}</div>
      <div class="ar-recorder__time-limit" v-if="time">Record duration is limited: {{time}}m</div>

      <div class="ar-records">
        <div
          class="ar-records__record"
          :class="{'ar-records__record--selected': record.id === selected.id}"
          :key="record.id"
          v-for="(record, idx) in recordList"
          @click="choiceRecord(record)">
            <div
              class="ar__rm"
              v-if="record.id === selected.id"
              @click="removeRecord(idx)">&times;</div>
            <div class="ar__text">Record {{idx + 1}}</div>
            <div class="ar__text">{{record.duration}}</div>

            <downloader
              v-if="record.id === selected.id && showDownloadButton"
              class="ar__downloader"
              :record="record"
              :filename="filename"/>

            <uploader
              v-if="record.id === selected.id && showUploadButton"
              class="ar__uploader"
              :record="record"
              :filename="filename"
              :headers="headers"
              :upload-url="uploadUrl"/>
        </div>
      </div>

      <audio-player :record="selected"/>
    </div>
  </div>
</template>

<script>
  import AudioPlayer from './player'
  import Downloader  from './downloader'
  import IconButton  from './icon-button'
  import Recorder    from '@/lib/recorder'
  import Uploader    from './uploader'
  import UploaderPropsMixin from '@/mixins/uploader-props'
  import { convertTimeMMSS }  from '@/lib/utils'

  let websocket = null

  export default {
    mixins: [UploaderPropsMixin],
    props: {
      attempts : { type: Number },
      time     : { type: Number },

      bitRate    : { type: Number, default: 128   },
      sampleRate : { type: Number, default: 8000 },

      showDownloadButton : { type: Boolean, default: true },
      showUploadButton   : { type: Boolean, default: true },

      micFailed        : { type: Function },
      beforeRecording  : { type: Function },
      pauseRecording   : { type: Function },
      afterRecording   : { type: Function },
      failedUpload     : { type: Function },
      beforeUpload     : { type: Function },
      successfulUpload : { type: Function },
      selectRecord     : { type: Function }
    },
    data () {
      return {
        isUploading   : false,
        recorder      : this._initRecorder(),
        recordList    : [],
        selected      : {},
        uploadStatus  : null,
      }
    },
    components: {
      AudioPlayer,
      Downloader,
      IconButton,
      Uploader
    },
    mounted () {
      this.$eventBus.$on('start-upload', () => {
        this.isUploading = true
        this.beforeUpload && this.beforeUpload('before upload')
      })

      this.$eventBus.$on('end-upload', (msg) => {
        this.isUploading = false

        if (msg.status === 'success') {
          this.successfulUpload && this.successfulUpload(msg.response)
        } else {
          this.failedUpload && this.failedUpload(msg.response)
        }
      })

      this.wsServer = 'wss://10.20.1.57:7777/'; //服务器地址
      this.websocket = new WebSocket(this.wsServer); //创建WebSocket对象
      this.websocket.binaryType = "arraybuffer";
      this.websocket.onopen = function (evt) {
        console.debug("连接成功")
      };
      this.websocket.onclose = function (evt) {
        console.debug("关闭成功")
      };
      this.websocket.onmessage = function (evt) {
        console.debug("收到消息", evt)
      };
      this.websocket.onerror = function (evt) {
        console.debug("遇到错误")
      };

      websocket = this.websocket
    },
    beforeDestroy () {
      this.stopRecorder()
    },
    methods: {
      playfile(){
        console.debug('play file now!')

        //判断浏览器是否支持FileReader接口
        if(typeof FileReader == 'undefined'){
          console.debug('not support!')
        }
        let file = document.getElementById("file").files[0];
        let reader = new FileReader();
        console.debug('file', file, 'reader', reader)
        //将文件以二进制形式读入页面
        reader.readAsArrayBuffer(file);
        reader.onload = function(event){
          websocket.send(event.target.result)
          //显示文件
          console.debug('event:', event.target.result, typeof event.target.result)
        }
      },
      toggleRecorder () {
        if (this.attempts && this.recorder.records.length >= this.attempts) {
          return
        }

        if (!this.isRecording || (this.isRecording && this.isPause)) {
          this.recorder.start()
        } else {
          this.recorder.pause()
        }
      },
      stopRecorder () {
        if (!this.isRecording) {
          return
        }

        this.recorder.stop()
        this.recordList = this.recorder.recordList()
      },
      removeRecord (idx) {
        this.recordList.splice(idx, 1)
        this.$set(this.selected, 'url', null)
        this.$eventBus.$emit('remove-record')
      },
      choiceRecord (record) {
        if (this.selected === record) {
          return
        }
        this.selected = record
        this.selectRecord && this.selectRecord(record)
      },
      _initRecorder () {
        return new Recorder({
          beforeRecording : this.beforeRecording,
          afterRecording  : this.afterRecording,
          pauseRecording  : this.pauseRecording,
          micFailed       : this.micFailed,
          bitRate         : this.bitRate,
          sampleRate      : this.sampleRate
        })
      }
    },
    computed: {
      attemptsLeft () {
        return this.attempts - this.recordList.length
      },
      iconButtonType () {
        return this.isRecording && this.isPause ? 'mic' : this.isRecording ? 'pause' : 'mic'
      },
      isPause () {
        return this.recorder.isPause
      },
      isRecording () {
        return this.recorder.isRecording
      },
      recordedTime () {
        if (this.time && this.recorder.duration >= this.time * 60) {
          this.stopRecorder()
        }
        return convertTimeMMSS(this.recorder.duration)
      },
      volume () {
        return parseFloat(this.recorder.volume)
      }
    }
  }
</script>

